Particle Physics

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Across
  1. 3. first elementary particle to be discovered
  2. 5. discovered new particle that he called neutron (name separated by a hyphen)
  3. 9. found nucleus in the atom
Down
  1. 1. experimented with "neutral" cathode rays (name separated by a hyphen)
  2. 2. supported the idea that atoms were "indivisible"
  3. 4. charge is neutral and is roughly the same mass as the proton
  4. 6. classified and sorted elements based on common chemical properties
  5. 7. comes from Greek word "a-tomos"
  6. 8. divided matter into four (five) elements: earth, air, water, fire, and cosmos(ether)